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Find Air conditioning pros in Marlborough

Avatar for MULL BROTHERS INC
MULL BROTHERS INC
4.7(
118
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 1945

Free estimates

Emergency services offered

"I called first thing in the morning on June 30th, as I had been without hot water since the previous Friday night. (Good thing it wasn't winter!) They not only came out within an hour, they secured a new unit and installed it the same day! That included emptying the old unit, removing it and installing the new one. The job was done by mid-afternoon.
They gave me a quote over the phone, and billed me the same amount. I was very pleased.
Last summer they installed a new central air unit for me, did a great job then as well. I just hope the furnace isn't going to go next! But if it does, I will know who to call.
"
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Response time2 days
7 neighbors recently requested a quote
Recommended by95%of homeowners
American Air Mechanical, LLC
4.2(
121
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 2004

Free estimates

Customers say: Quality work

"He responded to my voicemail very quickly and got my A/C working within 90 minutes of coming to check it out. He solved the issue and through his thorough explanation, I was able to follow what might have caused the issue, his steps to resolving it, and I know what I should plan for long-term regarding planned maintenance. The pricing was more than fair. I was pleasantly surprised despite already knowing how highly rated he was. Highly recommend."
8 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.3(
15
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Technician troubleshot the problem, went downtown to obtain a needed component, returned and completed the job in a matter of hours. No BS, fluff or buff!"
Response time2 days
8 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Cool Heat Mechanical, Inc.
Cool Heat Mechanical, Inc.
4.3(
39
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Pete, Jake and Jeremy and a couple of other workers from Cool Heat Mechanical did a great job on installing 3 central air conditioners and air handlers at my house over a 3 day period. They were neat, clean, on-time and did an excellent job installing the American Standard A/C and air handlers. The units are running great and improved my energy efficiency tremendously over my older units. Pete is extremely knowledgeable with his profession of installing A/C and heating systems. His pricing is excellent as well. We are also using them to install a new heating system within the next few weeks. We initially met with Dave who reviewed their products and gave us the pricing for the job. Dave made an excellent presentation of all their products and did not use any high pressure selling tactics. He offered some nice financing options through EnergizeCT that I was not aware of as well. I did have multiple vendors competing for the job and found that Cool Heat Mechanical was the most knowledgeable and had the best products and pricing in my area. I did a fair amount of research and this company is the one to use for your heating and cooling needs. I highly recommend Cool Heat Mechanical for your HVAC requirements."
Oil Furnace Install
AC Replacement
Gas Boiler
Oil Boiler Replacement
Gas boiler upgrade

+3

Response time5 hrs
Response rate90%
10 neighbors recently requested a quote
Avatar for Island Mechanical Services, LLC
Island Mechanical Services, LLC
5.0(
20
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"This company responded quickly to my emergency call faster than calling cng with an emergency. He was very personable and diagnosed the problem with proficiency. Serviced my home and restored the heat which warmed not only my home but my heart. Definitely Recommend this Company! Excellent!"
Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Parker Mechanical Heating and Cooling
Parker Mechanical Heating and Cooling
4.7(
15
)

Serving Marlborough, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Jeremy has been great from day one. He always answers his phone and gives prompt, quality and honest service. His prices are more than reasonable and his work is very professional and neat. I would recommend them to anyone looking for HVAC work!"
Additional Photos
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+30

Response time3 days
19 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Total Mechanical Systems, LLC
Total Mechanical Systems, LLC
4.0(
161
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 2002

Emergency services offered

Warranties offered

"I want to express my sincere appreciation to TMS for the exceptional job they did in installing our HVAC system. From the initial consultation to the final installation, their team demonstrated professionalism, expertise, and a commitment to delivering top-notch service."
Buderus Indirect Water Heater
Rheem Water Heaters
Rheem Water Heaters
Broken Waste Line - After
Broken Waste Line - Before

+78

Response time1 day
Recommended by91%of homeowners
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
119
)

Serving Marlborough, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"i desperately needed gutter cleaning the day before a major storm. I spoke with Dave initially and he worked with me to make it possible and sent out his crew by the afternoon to my house. His crew was so professional and worked very hard to make sure that all the work was done for me and they cleaned up and got rid of all the mess. This company could not have been nicer and helpful. I highly recommend them and am thankful that I found their business."
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1792

Response time1 day
Response rate92%
Recommended by88%of homeowners
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FAQs for air conditioning projects in Marlborough, CT

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Marlborough, CT homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.